doc: add demo video

Author: kombucha

README.md

@@ -1,5 +1,7 @@
 # Algolia NodeJS MCP implementation
 
+https://github.com/user-attachments/assets/c36a72e0-f790-4b3f-8720-294ab7f5f6eb
+
 - [Algolia NodeJS MCP implementation](#algolia-nodejs-mcp-implementation)
   - [Running the MCP Server (Mac Only)](#running-the-mcp-server-mac-only)
   - [What can I ask for?](#what-can-i-ask-for)